Particle Density Values for Numerical Estimation of Mass Concentration of Near-Surface Submicron and Micron Aerosol

IF 0.9 Q4 OPTICS

Atmospheric and Oceanic Optics Pub Date : 2024-01-17 DOI:10.1134/S102485602306009X

D. P. Gubanova, M. A. Iordanskii, A. A. Vinogradova, I. B. Belikov, V. A. Belousov

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Abstract

The results of experimental determination of near-surface aerosol density for particles of different composition and size have been published over many years. Based on the generalization of these data, as well as the results of our own field observations of microphysical characteristics and composition of Moscow aerosol, an algorithm and parameters for numerical estimation of mass concentration of submicron and micron urban aerosol are suggested. Using this algorithm, on the basis of experimental data on the size distribution function of aerosol particles in the diameter range 0.3–10 μm obtained during regular observations at IAP RAS in Moscow in 2020–2022, the mass concentration of near-surface aerosol of various fractions was calculated. A comparative analysis of the results of such an assessment and the data of synchronous measurements of mass concentration of aerosol particles using a portable aerosol spectrometer GRIMM 1.108 over the past two years has shown a good correspondence between the calculated and measured values. Density values for four ranges of aerosol particle sizes are selected for more correct numerical estimation of the mass concentration of urban aerosol of fractions PM_2.5 and PM₁₀.

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用于近地面亚微米和微米气溶胶质量浓度数值估算的粒子密度值

摘要--多年来，不同成分和大小的颗粒的近表面气溶胶密度的实验测定结果已经公布。根据对这些数据的归纳，以及我们自己对莫斯科气溶胶的微物理特性和组成的实地观测结果，提出了亚微米和微米城市气溶胶质量浓度数值估算的算法和参数。利用该算法，根据 2020-2022 年在莫斯科 IAP RAS 进行定期观测时获得的直径范围为 0.3-10 微米的气溶胶颗粒大小分布函数的实验数据，计算出了各种分量的近地表气溶胶的质量浓度。对这一评估结果和过去两年使用便携式气溶胶分光仪 GRIMM 1.108 同步测量气溶胶粒子质量浓度的数据进行的比较分析表明，计算值和测量值之间具有良好的对应关系。为了对城市气溶胶中 PM2.5 和 PM10 的质量浓度进行更正确的数值估算，选择了四个气溶胶颗粒大小范围的密度值。

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来源期刊

Atmospheric and Oceanic Optics OPTICS-

CiteScore

2.40

自引率

42.90%

发文量

期刊介绍： Atmospheric and Oceanic Optics is an international peer reviewed journal that presents experimental and theoretical articles relevant to a wide range of problems of atmospheric and oceanic optics, ecology, and climate. The journal coverage includes: scattering and transfer of optical waves, spectroscopy of atmospheric gases, turbulent and nonlinear optical phenomena, adaptive optics, remote (ground-based, airborne, and spaceborne) sensing of the atmosphere and the surface, methods for solving of inverse problems, new equipment for optical investigations, development of computer programs and databases for optical studies. Thematic issues are devoted to the studies of atmospheric ozone, adaptive, nonlinear, and coherent optics, regional climate and environmental monitoring, and other subjects.